#829 Integrates JMBE Creator with new user preferences editor for auto-downloading and compiling the JMBE library from within sdrtrunk. (#844)

Co-authored-by: Denny <denny@denny-desktop>

src/main/java/io/github/dsheirer/util/FileUtil.java

@@ -0,0 +1,76 @@
+/*
+ * *****************************************************************************
+ *  Copyright (C) 2014-2020 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+
+package io.github.dsheirer.util;
+
+import java.io.IOException;
+import java.nio.file.DirectoryStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Iterator;
+
+/**
+ * File Utilities
+ */
+public class FileUtil
+{
+    /**
+     * Recursively searches for the named file starting in the specified directory.
+     * @param directory to search for the file
+     * @return path to the file or null if the file can't be found
+     * @throws IOException if there is a file system error or if the file is not found
+     */
+    public static Path findFile(Path directory, String name) throws IOException
+    {
+        if(Files.isDirectory(directory))
+        {
+            DirectoryStream<Path> stream = Files.newDirectoryStream(directory);
+            Iterator<Path> it = stream.iterator();
+            Path path = null;
+            while(it.hasNext())
+            {
+                path = it.next();
+
+                if(Files.isDirectory(path))
+                {
+                    Path candidate = findFile(path, name);
+
+                    if(candidate != null)
+                    {
+                        return candidate;
+                    }
+                }
+                else
+                {
+                    if(path.endsWith(name))
+                    {
+                        return path;
+                    }
+                }
+            }
+        }
+        else
+        {
+            throw new IOException("A directory required for this method [" +
+                (directory != null ? directory.toString() : "null") + "]");
+        }
+
+        return null;
+    }
+}